K&N's high-flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle.

K&N TB-6713 Replacement Air Filter Product Reviews

I have been using K&N air filters on my vehicles for many years. They are at least as good as a genuine filter and last for the life of the vehicle. I have just bought one for my most recent vehicle, a Triumph Street Triple and expect it to be as good as the K&N filters I have previously used. The delivery is fast as well.